For flat or low-slope commercial roofs, a Roofing Contractor may install or repair systems using TPO, EPDM, PVC

https://commercialmaterialscontractor505.iamarrows.com/residential-roof-installation-considering-metal-roofs-via-installation-and-repair-services-1

For flat or low-slope commercial roofs, a Roofing Contractor may install or repair systems using TPO, EPDM, PVC, modified bitumen, or built-up roofing.